IPv6: Configuring default-route in OSPFv3

IPv6: Configuring default-route in OSPFv3

 ·         Let me configure OSPFv3 between 2 routers

R1----fa0/0-------------------fa0/0-----R2

2001:12::1----------------------2001:12::2

·         R1’s Loopback0: 2001:1::1

·         R2’s loopback0: 2001:2::2

R1(config)#ipv6 router ospf 1

R1(config-rtr)#router-id 1.1.1.1

R1(config-rtr)#

R1(config-rtr)#int fa0/0

R1(config-if)#ipv6 ospf 1 area 0

R1(config-if)#int loop0

R1(config-if)#ipv6 ospf 1 area 0

R1(config-if)#

 

R2(config)#ipv6 router ospf 1

R2(config-rtr)#router-id 2.2.2.2

R2(config-rtr)#int fa0/0

R2(config-if)#ipv6 ospf 1 area 0

R2(config-if)#int loop0

R2(config-if)#ipv6 ospf 1 area 0

R2(config-if)#

 

R1#show ipv6 route

IPv6 Routing Table - 7 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

C   2001:1::/64 [0/0]

     via ::, Loopback0

L   2001:1::1/128 [0/0]

     via ::, Loopback0

O   2001:2::2/128 [110/10]

     via FE80::C001:25FF:FE30:0, FastEthernet0/0

C   2001:12::/64 [0/0]

     via ::, FastEthernet0/0

L   2001:12::1/128 [0/0]

     via ::, FastEthernet0/0

L   FE80::/10 [0/0]

     via ::, Null0

L   FF00::/8 [0/0]

     via ::, Null0

R1#

 

R2#show ipv6 route

IPv6 Routing Table - 9 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

O   2001:1::1/128 [110/10]

     via FE80::C000:25FF:FE30:0, FastEthernet0/0

C   2001:2::/64 [0/0]

     via ::, Loopback0

L   2001:2::2/128 [0/0]

     via ::, Loopback0

C   2001:12::/64 [0/0]

     via ::, FastEthernet0/0

L   2001:12::2/128 [0/0]

     via ::, FastEthernet0/0

C   2001:22::/64 [0/0]

     via ::, Loopback1

L   2001:22::22/128 [0/0]

     via ::, Loopback1

L   FE80::/10 [0/0]

     via ::, Null0

L   FF00::/8 [0/0]

     via ::, Null0

R2#

 

Observation:

·         OSPF area 0 has been configured between R1 and R2

·         R1 has advertised its loopback 0 2001:1::1 into OSPF

·         R2 has advertised its loopback 0 2001:2::2 into OSPF

 

·         Let me configure R2 so that it advertises a default-route to R1

 

R2(config)#ipv6 router ospf 1

R2(config-rtr)#default-information originate always

R2(config-rtr)#

 

R1(config)#do show ipv6 route

IPv6 Routing Table - 8 entries

Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP

       U - Per-user Static route

       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary

       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2

OE2  ::/0 [110/1], tag 1

     via FE80::C001:25FF:FE30:0, FastEthernet0/0

C   2001:1::/64 [0/0]

     via ::, Loopback0

L   2001:1::1/128 [0/0]

     via ::, Loopback0

O   2001:2::2/128 [110/10]

     via FE80::C001:25FF:FE30:0, FastEthernet0/0

C   2001:12::/64 [0/0]

     via ::, FastEthernet0/0

L   2001:12::1/128 [0/0]

     via ::, FastEthernet0/0

L   FE80::/10 [0/0]

     via ::, Null0

L   FF00::/8 [0/0]

     via ::, Null0

R1(config)#

Observation:

·         R1 now has a default-route towards R2.